Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8684317 | Railroad switch point roller mechanism | — | 2014-04-01 |
| 8480008 | Rail controller mounting apparatus | — | 2013-07-09 |
| 8341851 | Railroad switch signaling device | — | 2013-01-01 |
| 7699272 | Railroad switching indicator mechanism | — | 2010-04-20 |
| 7407571 | Method of and apparatus for upgrading and gasifying heavy hydrocarbon feeds | Philip Rettger, Randall Goldstein, Yoram Bronicki, J. Robert Friday | 2008-08-05 |
| 6702936 | Method of and apparatus for upgrading and gasifying heavy hydrocarbon feeds | Philip Rettger, Randall Goldstein | 2004-03-09 |